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How Things Work

EVS · Class 4 · All

EVSClass 4AllEasy
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45s

What is the main idea of the chapter "How Things Work"?

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All 15 questions in this quiz

  1. What is the most important message of the chapter "How Things Work"?

    1. Machines should never be used.
    2. Machines and tools make our work easier, but they must be understood and used safely.
    3. Only adults can learn about machines.
    4. Technology has no importance in daily life.

  2. Why is it useful to know how things work?

    1. It helps us use objects safely and correctly.
    2. It wastes study time.
    3. It has no practical use.
    4. It makes work more difficult.

  3. Which source provides electrical energy to many household appliances?

    1. Electricity supply
    2. Sand
    3. Stones
    4. Wind alone

  4. Which everyday object helps cut paper?

    1. Scissors
    2. Plate
    3. Pillow
    4. Cup

  5. What is the correct way to use a machine?

    1. Follow instructions and use it carefully
    2. Use it carelessly
    3. Ignore safety rules
    4. Experiment without supervision

  6. Why should machines be maintained regularly?

    1. To keep them working safely and efficiently
    2. To make them heavier
    3. To waste money
    4. To stop them from working

  7. Which part of a bicycle helps it move forward?

    1. Pedals and wheels
    2. Seat only
    3. Bell only
    4. Basket

  8. Which of the following should be used carefully?

    1. Sharp tools like scissors
    2. Cotton ball
    3. Notebook
    4. Pencil eraser

  9. Why do we need tools?

    1. To make work easier and more efficient
    2. To make work impossible
    3. To increase waste
    4. To create unnecessary problems

  10. Which machine helps us travel faster?

    1. Bicycle
    2. Spoon
    3. Plate
    4. Pencil

  11. What should you do before touching an electrical appliance?

    1. Use wet hands
    2. Make sure your hands are dry
    3. Pour water on it
    4. Touch exposed wires

  12. Which object uses electricity to work?

    1. Hand fan
    2. Electric fan
    3. Broom
    4. Hammer

  13. Which of the following is a simple machine?

    1. Lever
    2. Television
    3. Computer
    4. Mobile phone

  14. Why do we use machines in our daily life?

    1. To make work easier and faster
    2. To make work more difficult
    3. To waste time
    4. To increase confusion

  15. What is the main idea of the chapter "How Things Work"?

    1. Learning only about plants
    2. Understanding how different objects and machines work in our daily life
    3. Learning only about animals
    4. Studying the weather